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Finding the Fourth Proportional to 170,739.80, 256,109.70 and 52,411.40

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Solution

The fourth proportional to 170,739.80, 256,109.70 and 52,411.40 is: 78,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,739.80 : 256,109.70 = 52,411.40 : x
  2. Step 2: Convert to fraction form
    170,739.80/256,109.70 = 52,411.40/x
  3. Step 3: Cross multiply
    170,739.80x = 256,109.70 × 52,411.40
  4. Step 4: Simplify right side
    170,739.80x = 13,423,067,930.58
  5. Step 5: Solve for x
    x = 13,423,067,930.58/170,739.80
  6. Step 6: Final answer
    x = 78,617.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.